While electric vehicles (EVs) are gaining popularity and contributing to lower overall carbon emissions, the transportation sector still faces significant challenges due to high-polluting large vehicles such as buses and lorries. These heavy-duty diesel vehicles often produce substantial amounts of carbon dioxide (CO2) and other harmful pollutants, negatively affecting air quality. One major issue is the practice of using 'runners' or unauthorized individuals who help vehicles bypass mandatory emissions inspections. This circumvention allows smoky buses and lorries to evade regulatory checks designed to ensure compliance with air quality standards. Consequently, these vehicles continue to release excessive CO2 and particulate matter, undermining efforts to reduce pollution. Effective enforcement of vehicle inspections is critical to manage emissions from such heavy vehicles. Governments and transport authorities need to implement stricter inspection protocols, increase monitoring, and apply penalties to deter inspection bypass practices. Additionally, investing in cleaner technologies for buses and lorries, such as electric or hybrid engines, can further reduce emissions. Public awareness of the impact of smoky vehicles on the environment and health is also essential. Poor air quality linked to these emissions contributes to respiratory problems and environmental degradation. Supporting policies that promote clean air and sustainable transport will help mitigate these issues. In conclusion, while electric cars provide a positive step toward emission reduction, addressing the emissions from large smoky buses and lorries through effective inspection enforcement, technological upgrades, and regulatory measures is vital for achieving cleaner air and protecting public health.